After a friend for whom her husband co-signed a loan disappears, the couple is left with a massive debt. Kaori, an insurance saleswoman, desperately needs major new contracts to help repay it. She meets Ozawa, the chairman of a large corporation, who lusts after her voluptuous body and offers unlimited business if she satisfies his desires. For her husband’s sake, Kaori returns in the elegant, revealing lingerie he prefers, unaware that the deal will become an irreversible contract for her body, forcing her to swallow his semen and saliva.